Not every 45yr old is ok with a reboot in life which emigration is. I know a few leaving and they ok with it.. but I also know a few who won’t because they feel too old. Your mileage various.
2ndly a lot of countries start counting age against you from 40.. at 45 it becomes harder. You also need a clean bill of health, fit, Discovery like checks to be ok etc. just something to keep in mind.
I dunno the whole ANc issues with SARB has me thinking my prediction of a political shake up end of year is likely.